They started Four Trimesters, a doula company that provides prenatal sessions, birth support and postnatal visits. The team has now grown to nine doulas.

Mrs Phang-Davey has taught antenatal classes to over 1,000 couples and supported the same number of births. She hopes to expand her birth sanctuary, a holistic centre for women before and when they give birth, open a hospital, and make "doulaing" a recognised career.

"I hope it will become an option for mums who want to work part-time."